APPLICATION SIGB1. GENERAL CONSIDERATIONS 1.1. Designation
Due to the increased SIGB (former name NRS-1) hygroscopic properties it is packed into the moisture resistance packing.
2. ORDER OF CONDUCTING THE WORK 2.1. Process of destroying the object consists of the following technological operations:
2.2. ÂPreparing the object for the destruction (for example, destruction of building constructions) the following points must be carried out:
2.3. As part of the flow chart to the destruction of the object the following characteristics enter:
2.4. Development of the diagram of drilling bore-holes is based on the analysis:
2.5. Main characteristics of the destroying object considered in the development of the diagram of drilling bore-holes, are: ultimate strength in the break of the object material (destr.) and parameters of its reinforcement (for the steel concrete). 3. EQUIPMENT FOR DRILLING BORE-HOLES 4. BORE-HOLE DRILLING AND ITS PREPARATION
4.9. For detecting the armature (if the diagram of the location of armature in the object is known) the drilling of bore-holes is made in immediate proximity of the armature (see fig. 7 appendix 1). 4.10. Arrangement of the nearest to the free surface bore-hole from the free surface must be two times less than the distance between the "internal" bore-holes (see fig. 5 of appendix 1). 5.PREPARATION OF THE WORKING MIXTURE AND FILLING BORE-HOLES WITH IT.
5.2. Preparation of the working mixture is accomplished as follows:
In the clean vessel (for example bucket) the measured quantity of clean (tap) water is poured out, and then during the continuous mixing (by hand or mechanically) the weighed quantity of powder is gradually (!) poured out into the water and one continues to intermix till obtaining the mass of good fluidity without the visible lumps.
6. CRACK FORMATION, EJECTION
6.1.1. The higher ultimate strength in the break of the material of the object, the greater the time till crack formation is.
6.4. To decrease the ejection of the working mixture from bore-holes is possible using water with the lowest possible temperature for the preparation of the working mixture. 7. DEVELOPMENT OF THE OBJECT 8.SAFETY ENGINEERING. For consultations regarding the use of SIGB (analog NRS-1) address: Schematic figures.
Fig.1. Mechanism of SIGB (former name NRS-1) action 1 – the object of destruction, 2 - the bore-holes filled with the working mixture, 3 - free surfaces of the object, P - pressure in the bore-hole (crystallized pressure). ^ - tensile forces, 4 - cracks formed by the SIGB (former name NRS -1) action, a - the distance between bore-holes, b - distance from the center of the bore-hole to the free surface.
b. for the dismantling with the use of lifting mechanisms Fig. 2. Diagram of the destruction of objects in the absence (a) or presence (b) of lifting-transporting equipment 1 - bore-holes with the working mixture
Fig.3. Recommended diagram of blocks of mountain rocks output with two free vertical surfaces and by horizontal (inclined) nature crack 1 - vertical free surfaces;
Fig. 4. Arrangement of bore-holes and directivity of the destruction
a. disorderly destruction
Fig. 5. Depth of bore-holes and crack formation
1 - free surface,
Fig.6. Destruction of objects of low height
a. use of bore-holes of smaller diameter or inclined bore-holes
Fig. 7. Version of the arrangement of bore-holes with the destruction of reinforced concrete
a. use of bore-holes of smaller diameter or inclined bore-holes |
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